🔌 Data flows, power stops—control your USB connections like a pro!
The PortaPow USB Power Blocker twin pack is a USB-A male-to-female adapter that disables the 5V power line while allowing full USB 2.0 data transfer. Perfect for specialist applications such as 3D printers and Raspberry Pi devices where power delivery can cause issues, this product ensures data integrity without charging. Note: not compatible with most smartphones and tablets.
B**E
Stops 3D printer powering the MCU connected to USB
Converted my Creality printers to Klipper and these stop the raspberry pi from powering the MCU over USB. You can modify your USB cables but I wanted something with a little less jank. These cost a premium, but did exactly what I wanted them to do.
C**R
Fantastic
Excellent. Stops the Raspberry Pi from sending power to my printer as well as preventing undervoltage alerts in Octoprint! Get these for your printers!
M**M
Awesome
The greatest thing about these is that you can see the data protection because the metal two contacts of a normal USB plug are visibly missing so you know that there is no foolery going on with this product. If I had bought one of the competitors without the visible data protection, I would’ve had to use my multimeter to ensure that there is no continuity between or of the two middle data connections on USB.
S**M
Keeps Rpi from powering my 3d printer board via usb.
Works as expected, larger than it looks online.Keeps Rpi from powering my 3d printer board via usb.Initially I tried tape on the usb power pin but it was not reliable.
B**N
Great for the sonic pad
Great! dont have to keep pulling/swapping the cables on my sonic pad to keep it from partially powering up the controller even when the printer is off so now I can leave them all plugged in and the sonic pad on all the time and just switch on which printer I want to use when it comes time to print. Been looking for these for awhile and love it! Just wish they were a little more compact or perhaps had a pigtail on them on the male side so I wouldnt have to worry about them getting bumped and broken off or damaging the sonic pad by sticking out too far, small issue that could be solved with a short USB jumper cable but that just adds more cost and more potential connection issues so I live with it for now.
P**R
Essential Protection for Your Devices!
I recently started using the PortaPow USB Power Blocker with my micro USB cable for my 3D printer, and I have to say, it's been a game-changer!This little gadget does an excellent job of preventing my printer from pulling too much power from my sonic pad, which could potentially damage it. It stops charging while still allowing data transfer, ensuring that my devices stay safe and sound.Installation was a breeze - I simply plugged it in between my printer and the sonic pad, and it started working right away. Plus, it's super compact, so it doesn't take up much space.Overall, I'm incredibly impressed with the PortaPow USB Power Blocker. It's a simple yet effective solution that gives me peace of mind knowing that my devices are protected. Five stars from me!
J**M
TTL/USB Woes Resolved!
Do you have a TTLUSB cable coming off a device which is backfeeding power to your Raspberry Pi 4 and preventing the little computer from booting up because the USB bus is unhappy about that trickle of power coming in? Fret no more! This dead simple device (use male to female on a PCB which is just missing a trace!) will break that backfed power and let you boot up properly.
B**R
Sure beats electrical tape!
These work awesome. Much better than trying to tape the connector for use on a 3d printer
Trustpilot
3 days ago
2 months ago